Typically a female ranging from 12-16 years old , that hangs out at the "ramps" not because of the thrill of bmxing , or skateboarding . But because they are interested in making out with the ugly, paki ,acne infested teenagers under the ramps .

a ramp tramp is a girl who hangs out at the skate parks. she's usually by a rail or ramp checking out the boys in tight pants hoping the boy will come talk to her. she usually wears extremley low cut shirts from abercrombie or hollister. OR! she is a wanna be skater so she is wearing tight skinny jeans and a volcom shirt. either way you still wanna look out for these girls they're nothing but trouble and only wanna be with you because your hot.

"dude what a ramp tramp!"
or
"that ramp tramp wants to get with danny so bad just look at how she stairs at his....package"